Ovality Resistance of a Spirally Wound Fiber Tube
US-2026035204-A1 · Feb 5, 2026 · US
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Making tubes or pipes by feeding obliquely to the winding mandrel centre line
Making tubes or pipes by feeding obliquely to the winding mandrel centre line · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B31C3/00 |
| Official title | Making tubes or pipes by feeding obliquely to the winding mandrel centre line |
| Display label | Making tubes or pipes by feeding obliquely to the winding mandrel centre line |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal Spraying of Paper Product Cores
US-2025354336-A1 · Nov 20, 2025 · US
Machine and method for producing a tubular product, preferably made of paper, preferably usable to produce straws
US-11951707-B2 · Apr 9, 2024 · US
Apparatus and method for manufacturing of spirally wound tubes
US-2024009953-A1 · Jan 11, 2024 · US
Machine and method for producing a tubular product, preferably made of paper, preferably usable to produce straws
US-2023241858-A1 · Aug 3, 2023 · US
Protective barrier coating for tubes and cores
US-11499270-B2 · Nov 15, 2022 · US
Elongated tubular articles from wet-laid webs
US-11390996-B2 · Jul 19, 2022 · US
Equipment and method for the production of cardboard tubes
US-11312098-B2 · Apr 26, 2022 · US
Protective barrier coating for tubes and cores
US-2021164164-A1 · Jun 3, 2021 · US
Protective barrier coating and ink
US-10941523-B2 · Mar 9, 2021 · US
Elongated tubular articles from wet-laid webs
US-2020063349-A1 · Feb 27, 2020 · US
Hollow fiber membrane sheet-like object, method of manufacturing hollow fiber membrane sheet-like object, hollow fiber membrane sheet laminate, method of manufacturing hollow fiber membrane sheet laminate, hollow fiber membrane module and method of manufacturing hollow fiber membrane module
US-10507430-B2 · Dec 17, 2019 · US
Protective Barrier Coating and Ink
US-2019368128-A1 · Dec 5, 2019 · US
Composite container with separator for forming multiple compartments
US-10173802-B2 · Jan 8, 2019 · US
System and method of manufacturing composite core
US-10131108-B2 · Nov 20, 2018 · US
Fibrous cores
US-9756991-B2 · Sep 12, 2017 · US
Machine for the production of cardboard tubes
US-2017239907-A1 · Aug 24, 2017 · US
Hollow fiber membrane sheet-like object, method of manufacturing hollow fiber membrane sheet-like object, hollow fiber membrane sheet laminate, method of manufacturing hollow fiber membrane sheet laminate, hollow fiber membrane module and method of manufacturing hollow fiber membrane module
US-2017182462-A1 · Jun 29, 2017 · US
Composite container with separator for forming multiple compartments
US-2017113830-A1 · Apr 27, 2017 · US
Equipment and method for the production of cardboard tubes
US-2016347021-A1 · Dec 1, 2016 · US